EP2865885B1 - Base connection and lock flow for fish climbing screws - Google Patents

Base connection and lock flow for fish climbing screws Download PDF

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Publication number
EP2865885B1
EP2865885B1 EP14189688.6A EP14189688A EP2865885B1 EP 2865885 B1 EP2865885 B1 EP 2865885B1 EP 14189688 A EP14189688 A EP 14189688A EP 2865885 B1 EP2865885 B1 EP 2865885B1
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EP
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Prior art keywords
fish
opening
screw
inlet opening
working screw
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EP14189688.6A
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German (de)
French (fr)
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EP2865885A1 (en
Inventor
Bernhard Strasser
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Strasser & Gruber GesmbH
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Strasser & Gruber GesmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B7/00—Water wheels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/24—Rotors for turbines
    • F05B2240/243—Rotors for turbines of the Archimedes screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/312—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being parallel to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/60—Ecological corridors or buffer zones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the invention relates to a hydropower plant for generating electrical energy by converting the flow energy of a flowing body of water, with a arranged in a trough working screw, driven by this generator and arranged in the same longitudinal direction, counter-rotating fish ascent snail.
  • Such training is for example from the German utility model DE 20 2012 104 612 U1 removed, with this design, the fish ladder is centrally located in the working screw, and the lower end of the conveyor pipe of the fish ladder snail over the working screw at the bottom and reaches the upper end to the upper water above the working screw.
  • Such a design has the disadvantage that it is difficult for the fish to find their way into the fish ascent screw, although a corresponding lock flow would be present.
  • the outflow of water from the working screw is namely distributed around the entrance of the delivery pipe, so that the fish do not reach the entrance opening in the fish ladder.
  • the invention is based on the object to provide a device of the type mentioned in the introduction, with which the fish are selectively guided to the inlet opening of the fish ladder snail.
  • this object is achieved in that the inlet opening of lying next to the working screw fish ladder is provided with a Sohlanitati whose surface passes from the flat bottom of the outflow of the working screw into a conical, the input opening of the fish ladder corresponding level. This ensures that the fish, against the flow of the streaming water swim up and ascend into the upper area to be directed specifically to the entrance opening of the fish ladder snail.
  • a gap provided between the inlet opening and the bottom connection can be adjustable. This can be achieved by passing through the gap water in the Sohlanitati a lock flow, which indicates the fish where they should enter into the fish ladder snail. Furthermore, a rake can limit the entry opening of the fish ascent screw lying next to the working auger upwards, which prevents fish outside get behind the entrance opening of the fish ladder snail and stuck there.
  • water flowing out of the working screw as a lock flow for the fish may be introduced below the lower area of the fish ascent screw, whereby a corresponding reinforcement of the lock flow is achieved.
  • the same can also be achieved in that the lower region of the fish ascent screw is surrounded by a chamber or partition, which has a leading to the discharge opening of the working screw, adjustable by a slider opening.
  • the inlet opening 1 of the fish ladder 2 is preceded by a bottom connection 3, which leads from the outflow channel 4 to the inlet opening 1.
  • a bottom connection 3 leads from the outflow channel 4 to the inlet opening 1.
  • Fig. 3 indicated goes the Sohlanitati 3 from the flat bottom of the outflow channel 4 and goes from the flat surface of the channel 4 in a semi-cylindrical or semi-elliptical plane, which corresponds to the profile of the inlet opening 1 of the fish ladder 2.
  • a grid 6 is provided, which, as seen Fig. 3 can be seen, with the ends of the bars approximately at the periphery of the fish ladder 2 ends. This is to prevent fish from swimming upstream or next to the inlet opening 1 of the fish ladder 2 during upward swimming.
  • a partition wall 7 is provided which has an opening 8 leading to the sole connection 3.
  • This opening 8 is lockable in a manner not shown by means of a slide.
  • the passage opening 8 and the inlet opening 1 of the fish ladder 2 is arranged below the mirror of the underwater. This means that the entire inlet opening 1 is fully in the water flow, whereby the fish, when they swim against the flow and enter the entrance opening, are reliably taken along by the ascent screw.
  • a gap 9 is provided, which also serves to introduce water as Lockströmung. This gap 9 is pre-selectable and adjustable in a manner not shown.
  • the Sohlanitati 3 forming transition cone is preferably made of plastic, which is fixed by means of slots adjustable at the bottom of the outflow channel 4. However, it is also a steel construction with a concrete support possible.
  • the gap 9 between the inlet opening 1 of the fish ladder 2 and the opposite end of the Sohlanitati 3 should be between 1 to 5 centimeters and is adjustable over the mentioned slots.
  • the rake 6 prevents it as already mentioned, the swim through the fish behind the fish ladder 2 but allows the flow of water, which as
  • Lock flow is used. The rake is pulled out to remove any dirt.
  • a lock flow is given in the form of the amount of water that has to flow out of the fish ladder to attract the fish.
  • the amount of water is dependent on the lead fish, in order to always get the desired lock flow, the amount of water by means of the slide in the opening 8 in the partition 7 between the working screw 5 and the fish climb screw 2 is adjustable.
  • the slide is arranged in the flow direction of the water from the working screw 5 in front of the inlet opening 1 of the fish ladder 2 and thus directs out of the working screw 5 leaking water directly to the inlet opening 1 of the fish ladder 2 out.
  • the water flows laterally on the pipe of the fish ladder worm, while the pipe flows around the inlet opening 1, thus creating the lock flow within the bottom connection, which then leads the fish to the inlet opening 1.
  • the actual function of the fish ascent screw is the same as in the known prior art, wherein the fish are promoted by the rotation upwards within the fish ascent screw and discharged there via a corresponding outlet in the upper water of the working screw 5.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ladders (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Description

Die Erfindung bezieht sich auf eine Wasserkraftanlage zum Erzeugen elektrischer Energie durch Umwandlung von Strömungsenergie eines strömenden Gewässers, mit einer in einem Trog angeordneten Arbeitsschnecke, einem von dieser angetriebenen Generator und einer in gleicher Längsrichtung angeordneten, gegenläufigen Fischaufstiegsschnecke.The invention relates to a hydropower plant for generating electrical energy by converting the flow energy of a flowing body of water, with a arranged in a trough working screw, driven by this generator and arranged in the same longitudinal direction, counter-rotating fish ascent snail.

Eine derartige Ausbildung ist beispielsweise aus der deutschen Gebrauchsmusterschrift DE 20 2012 104 612 U1 entnehmbar, wobei bei dieser Ausbildung die Fischaufstiegsschnecke zentral in der Arbeitsschnecke angeordnet ist, und das untere Ende des Förderrohrs der Fischaufstiegsschnecke die Arbeitsschnecke am unteren Ende überragt und am oberen Ende bis in das Oberwasser oberhalb der Arbeitsschnecke reicht. Eine derartige Ausbildung hat den Nachteil, dass es für die Fische schwer ist, in die Fischaufstiegsschnecke hineinzufinden, obwohl eine entsprechende Lockströmung vorhanden wäre. Die Abströmung des Wassers aus der Arbeitsschnecke ist nämlich rund um den Eintritt des Förderrohres verteilt, sodass die Fische nicht zur Eingangsöffnung in die Fischaufstiegsschnecke gelangen.Such training is for example from the German utility model DE 20 2012 104 612 U1 removed, with this design, the fish ladder is centrally located in the working screw, and the lower end of the conveyor pipe of the fish ladder snail over the working screw at the bottom and reaches the upper end to the upper water above the working screw. Such a design has the disadvantage that it is difficult for the fish to find their way into the fish ascent screw, although a corresponding lock flow would be present. The outflow of water from the working screw is namely distributed around the entrance of the delivery pipe, so that the fish do not reach the entrance opening in the fish ladder.

Eine ähnliche Ausbildung ist auch in der deutschen Gebrauchsmusterschrift DE 20 2011 108 819 U1 beschrieben, wobei auch bei dieser Ausbildung ein gezieltes Hinführen der Fische zur Eingangsöffnung der Fischaufstiegsschnecke nicht gegeben ist. Überdies ist diese bekannte Ausbildung auch insofern nachteilig, als die Arbeitsschnecke in einem geschlossenen Rohr angeordnet ist, was leicht zu Verklemmungen durch eintretende Äste oder andere größere Gegenstände führen kann.A similar training is also in the German utility model DE 20 2011 108 819 U1 described, which is not given in this training a targeted feeding the fish to the entrance opening of the fish ladder snail. Moreover, this known training is also disadvantageous in that the working screw is arranged in a closed tube, which can easily lead to jamming by entering branches or other larger items.

Der Erfindungen liegt nun die Aufgabe zugrunde eine Einrichtung der Eingangs genannten Art zu schaffen, mit welcher die Fische gezielt zur Eingangsöffnung der Fischaufstiegsschnecke geführt werden.The invention is based on the object to provide a device of the type mentioned in the introduction, with which the fish are selectively guided to the inlet opening of the fish ladder snail.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Eingangsöffnung der neben der Arbeitsschnecke liegenden Fischaufstiegsschnecke mit einer Sohlanbindung versehen ist, deren Oberfläche von deren ebenem Boden des Abströmkanals der Arbeitsschnecke in eine konische, der Eingangsöffnung der Fischaufstiegsschnecke entsprechende Ebene übergeht. Damit wird erreicht, dass die Fische, die gegen die Strömung des strömenden Gewässers anschwimmen und in den oberen Bereich aufsteigen wollen gezielt zur Eingangsöffnung der Fischaufstiegsschnecke geleitet werden.According to the invention, this object is achieved in that the inlet opening of lying next to the working screw fish ladder is provided with a Sohlanbindung whose surface passes from the flat bottom of the outflow of the working screw into a conical, the input opening of the fish ladder corresponding level. This ensures that the fish, against the flow of the streaming water swim up and ascend into the upper area to be directed specifically to the entrance opening of the fish ladder snail.

Vorteilhafter Weise kann ein zwischen der Eingangsöffnung und der Sohlanbindung vorgesehener Spalt einstellbar sein. Damit kann durch das durch den Spalt durchtretende Wasser in der Sohlanbindung eine Lockströmung erreicht werden, welche den Fischen anzeigt, wo sie in die Fischaufstiegsschnecke eintreten sollen. Weiters kann ein Rechen die Eingangsöffnung der neben der Arbeitsschnecke liegenden Fischaufstiegsschnecke nach oben hin begrenzen, womit verhindert wird, dass Fische außen hinter die Eingangsöffnung der Fischaufstiegsschnecke gelangen und dort festsitzen.Advantageously, a gap provided between the inlet opening and the bottom connection can be adjustable. This can be achieved by passing through the gap water in the Sohlanbindung a lock flow, which indicates the fish where they should enter into the fish ladder snail. Furthermore, a rake can limit the entry opening of the fish ascent screw lying next to the working auger upwards, which prevents fish outside get behind the entrance opening of the fish ladder snail and stuck there.

Um den Fischen das Eintreten in die Eingangsöffnung zu erleichtern, kann als Lockströmung für die Fische aus der Arbeitsschnecke abströmendes Wasser unter den unteren Bereich der Fischaufstiegsschnecke eingeleitet sein, womit eine entsprechende Verstärkung der Lockströmung erreicht ist. Gleiches kann auch dadurch erzielt werden, dass der untere Bereich der Fischaufstiegsschnecke von einer Kammer bzw. Trennwand umgeben ist, welche eine zur Abströmöffnung der Arbeitsschnecke führende, durch einen Schieber regulierbare Öffnung aufweist.In order to facilitate the fish entering the inlet opening, water flowing out of the working screw as a lock flow for the fish may be introduced below the lower area of the fish ascent screw, whereby a corresponding reinforcement of the lock flow is achieved. The same can also be achieved in that the lower region of the fish ascent screw is surrounded by a chamber or partition, which has a leading to the discharge opening of the working screw, adjustable by a slider opening.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt.

  • Fig. 1 zeigt schematisch einen Längsschnitt durch den unteren Bereich der Arbeitsschnecke mit dahinterliegender Fischaufstiegsschnecke.
  • Fig. 2 gibt den Einströmbereich in die Fischaufstiegsschnecke in größerem Maßstab wieder.
  • In Fig. 3 ist eine Vorderansicht der Fischaufstiegsschnecke in Richtung des Pfeiles "P" der Fig. 2 gesehen dargestellt.
In the drawing, an embodiment of the subject invention is shown.
  • Fig. 1 schematically shows a longitudinal section through the lower portion of the working screw behind it fish ascent snail.
  • Fig. 2 returns the inflow area into the fish ladder on a larger scale.
  • In Fig. 3 is a front view of the fish ascent snail in the direction of the arrow "P" Fig. 2 seen shown.

Mit 1 ist die Eingangsöffnung einer Fischaufstiegsschnecke 2 bezeichnet, welche parallel zu einer Arbeitsschnecke 5 dieser benachbart angeordnet ist.1 with the input opening of a fish ladder screw 2 is referred to, which is arranged parallel to a working screw 5 adjacent thereto.

Der Eingangsöffnung 1 der Fischaufstiegsschnecke 2 ist eine Sohlanbindung 3 vorgelagert, welche vom Abströmkanal 4 zu der Eingangsöffnung 1 führt. Wie in Fig. 3 angedeutet, geht die Sohlanbindung 3 von dem ebenen Boden des Abströmkanales 4 aus und geht von der ebenen Fläche des Kanals 4 in eine halbzylindrische oder halbelliptische Ebene über, welche dem Profil der Eingangsöffnung 1 der Fischaufstiegsschnecke 2 entspricht.The inlet opening 1 of the fish ladder 2 is preceded by a bottom connection 3, which leads from the outflow channel 4 to the inlet opening 1. As in Fig. 3 indicated, goes the Sohlanbindung 3 from the flat bottom of the outflow channel 4 and goes from the flat surface of the channel 4 in a semi-cylindrical or semi-elliptical plane, which corresponds to the profile of the inlet opening 1 of the fish ladder 2.

Oberhalb der Eingangsöffnung 1 der Fischaufstiegsschnecke 2 ist ein Gitterrechen 6 vorgesehen, der, wie aus Fig. 3 ersichtlich, mit den Enden der Gitterstäbe etwa am Umfang der Fischaufstiegsschnecke 2 endet. Damit soll verhindert werden, dass Fische beim Aufwärtsschwimmen neben der Eingangsöffnung 1 der Fischaufstiegsschnecke 2 vorbei schwimmen oder darüber springen.Above the inlet opening 1 of the fish ladder 2, a grid 6 is provided, which, as seen Fig. 3 can be seen, with the ends of the bars approximately at the periphery of the fish ladder 2 ends. This is to prevent fish from swimming upstream or next to the inlet opening 1 of the fish ladder 2 during upward swimming.

Seitlich zwischen der Fischaufstiegsschnecke 2 und der Arbeitsschnecke 5 ist eine Trennwand 7 vorgesehen, welche eine zur Sohlenanbindung 3 führende Öffnung 8 aufweist. Diese Öffnung 8 ist in nicht dargestellter Weise mittels eines Schiebers abschließbar. Damit ist der Anteil des aus der Arbeitsschnecke 5 strömenden Wasser, welcher zu der Fischaufstiegsschnecke 2 geführt wird, entsprechend einstellbar. Die Durchgangsöffnung 8 sowie die Eingangsöffnung 1 der Fischaufstiegsschnecke 2 ist unterhalb des Spiegels des Unterwassers angeordnet. Das bedeutet, dass die gesamte Eingangsöffnung 1 voll im Wasserstrom liegt, womit die Fische, wenn sie gegen die Strömung anschwimmen und in die Eingangsöffnung hineintreten, zuverlässig von der Aufstiegsschnecke mitgenommen werden.Laterally between the fish ladder 2 and the working screw 5, a partition wall 7 is provided which has an opening 8 leading to the sole connection 3. This opening 8 is lockable in a manner not shown by means of a slide. Thus, the proportion of the water flowing from the working screw 5, which is guided to the fish ascent screw 2, can be adjusted accordingly. The passage opening 8 and the inlet opening 1 of the fish ladder 2 is arranged below the mirror of the underwater. This means that the entire inlet opening 1 is fully in the water flow, whereby the fish, when they swim against the flow and enter the entrance opening, are reliably taken along by the ascent screw.

Zwischen der Sohlanbindung 3 und der Eingangsöffnung 1 der Fischaufstiegsöffnung 2 ist ein Spalt 9 vorgesehen, welcher ebenfalls zum Einleiten von Wasser als Lockströmung dient. Dieser Spalt 9 ist in nicht dargestellter Weise vorwähl- und einstellbar.Between the Sohlanbindung 3 and the inlet opening 1 of the fishway opening 2, a gap 9 is provided, which also serves to introduce water as Lockströmung. This gap 9 is pre-selectable and adjustable in a manner not shown.

Der die Sohlanbindung 3 bildende Übergangskonus ist vorzugweise aus Kunststoff hergestellt, der mittels Langlöcher einstellbar am Grund des Abströmkanals 4 befestigt ist. Es ist jedoch auch eine Stahlkonstruktion mit einer Betonauflage möglich. Der Spalt 9 zwischen der Eingangsöffnung 1 der Fischaufstiegsschnecke 2 und im gegenüberliegenden Ende der Sohlanbindung 3 soll zwischen 1 bis 5 Zentimeter betragen und ist über die erwähnten Langlöcher einstellbar.The Sohlanbindung 3 forming transition cone is preferably made of plastic, which is fixed by means of slots adjustable at the bottom of the outflow channel 4. However, it is also a steel construction with a concrete support possible. The gap 9 between the inlet opening 1 of the fish ladder 2 and the opposite end of the Sohlanbindung 3 should be between 1 to 5 centimeters and is adjustable over the mentioned slots.

Der Rechen 6 verhindert dabei wie schon erwähnt das Durchschwimmen der Fische hinter die Fischaufstiegsschnecke 2 ermöglicht aber das Durchfließen des Wassers, welches alsThe rake 6 prevents it as already mentioned, the swim through the fish behind the fish ladder 2 but allows the flow of water, which as

Lockströmung dient. Der Rechen ist herausziehbar angeordnet um eventuelle Verschmutzungen entfernen zu können.Lock flow is used. The rake is pulled out to remove any dirt.

Gemäß dem Leitfaden für Fischaufstiegshilfen ist eine Lockströmung vorgegeben und zwar in Form der Wassermenge, die aus der Fischaufstiegshilfe ausströmen muss um die Fische anzulocken. Die Wassermenge ist dabei vom Leitfisch abhängig, wobei, um immer die gewünschte Lockströmung zu erhalten, die Wassermenge mittels des Schiebers in der Öffnung 8 in der Trennwand 7 zwischen der Arbeitsschnecke 5 und der Fischaufstiegsschnecke 2 regelbar ist. Der Schieber ist dabei in Strömungsrichtung des Wassers aus der Arbeitsschnecke 5 vor der Eintrittsöffnung 1 der Fischaufstiegsschnecke 2 angeordnet und leitet so aus der Arbeitsschnecke 5 austretendes Wasser direkt zur Eingangsöffnung 1 der Fischaufstiegsschnecke 2 hin. Das Wasser fließt dabei seitlich an Rohr der Fischaufstiegsschnecke unter Umspülung des Rohres an die Eingangsöffnung 1 herum und erzeugt so innerhalb der Sohlanbindung die Lockströmung, die dann die Fische zur Eingangsöffnung 1 führt.According to the guideline for fish ladders, a lock flow is given in the form of the amount of water that has to flow out of the fish ladder to attract the fish. The amount of water is dependent on the lead fish, in order to always get the desired lock flow, the amount of water by means of the slide in the opening 8 in the partition 7 between the working screw 5 and the fish climb screw 2 is adjustable. The slide is arranged in the flow direction of the water from the working screw 5 in front of the inlet opening 1 of the fish ladder 2 and thus directs out of the working screw 5 leaking water directly to the inlet opening 1 of the fish ladder 2 out. The water flows laterally on the pipe of the fish ladder worm, while the pipe flows around the inlet opening 1, thus creating the lock flow within the bottom connection, which then leads the fish to the inlet opening 1.

Die eigentliche Funktion der Fischaufstiegsschnecke ist gleich jener wie beim bekannten Stand der Technik, wobei die Fische innerhalb der Fischaufstiegsschnecke durch die Rotation nach oben gefördert und dort über einen entsprechenden Auslass in das Oberwasser der Arbeitsschnecke 5 entlassen werden.The actual function of the fish ascent screw is the same as in the known prior art, wherein the fish are promoted by the rotation upwards within the fish ascent screw and discharged there via a corresponding outlet in the upper water of the working screw 5.

Claims (5)

  1. A hydroelectric power plant for generating electrical power by converting the flow energy of a flowing water course, having a working screw (5) arranged in a trough, a generator driven by said screw and having a fish climbing route (2) operating in the opposite direction and arranged in the same longitudinal direction, characterized in that the inlet opening (1) of the fish climbing route (2) situated next to the working screw (5) is provided with a base connection (3), the surface of which transitions from the flat bottom of the outflow channel (4) of the working screw (5) into a conical surface, corresponding to the inlet opening (1) of the fish climbing route (2).
  2. The hydroelectric power plant according to claim 1, characterized in that a gap (9) which is provided between the inlet opening (1) und the base connection (3) is adjustable.
  3. The hydroelectric power plant according to claim 1 or 2, characterized in that a rake (6) forms an upper boundary of the inlet opening (1) of the fish climbing route (2) situated next to the working screw (5).
  4. The hydroelectric power plant according to any one of claims 1 to 3, characterized in that as an attraction current for the fish, water flowing out of the working screw (5) is directed under the lower area of the fish climbing route (2).
  5. The hydroelectric power plant according to any one of claims 1 to 4, characterized in that the lower area of the fish climbing route (2) is enclosed by a chamber respectively partition wall (7), which comprises an opening (8) leading to the outflow opening of the working screw (5), wherein said opening (8) can be regulated by a valve.
EP14189688.6A 2013-10-22 2014-10-21 Base connection and lock flow for fish climbing screws Active EP2865885B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA815/2013A AT514687B1 (en) 2013-10-22 2013-10-22 Sohlanbindung and Lockströmung fish fish snails

Publications (2)

Publication Number Publication Date
EP2865885A1 EP2865885A1 (en) 2015-04-29
EP2865885B1 true EP2865885B1 (en) 2016-11-02

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IT201900021435A1 (en) * 2019-11-18 2021-05-18 Airmec Srl HYDROELECTRIC SCREW PLANT
WO2021177890A1 (en) * 2020-03-05 2021-09-10 Transmoro Ab Inlet for a hydrodynamic screw

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BE1017646A3 (en) * 2006-12-05 2009-03-03 Witteveen En Bos Raadgevende I SCREW PUMP AND GENERATOR.
DE102009007028A1 (en) * 2009-02-02 2010-08-12 Michael Pokriefke Hydroelectric installation for converting energy potential of higher-level backwater and lower-level underwater into electrical energy, has transverse structure and generator supported on float assemblies in backwater and underwater
DE202011108819U1 (en) * 2011-12-08 2012-01-27 Walter Albrecht Hydrodynamic screw
DE202012104612U1 (en) 2012-11-27 2012-12-03 Rehart Gmbh Hydropower plant

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AT514687A4 (en) 2015-03-15
EP2865885A1 (en) 2015-04-29

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